2. Sample Papers
  3. 8th Class
  4. Science

8th Class Science Sample Paper Science Olympiad Model Test Paper-10

  • question_answer
    Nitrogen oxide, which is a major pollutants of air is produced by burning of:

    A) Petrol

    B) Diesel

    C) Coal

    D) All of these

    E) None of these

    Correct Answer: D

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